/// <summary>
/// Displays the <see cref="ContextMenu"/> if
/// it was set.
/// </summary>
private void ShowContextMenu(System.Windows.Point cursorPosition)
{
if (IsDisposed)
{
return;
}
//raise preview event no matter whether context menu is currently set
//or not (enables client to set it on demand)
var args = RaisePreviewTrayContextMenuOpenEvent();
if (args.Handled)
{
return;
}
if (ContextMenu != null)
{
//use absolute position
ContextMenu.Placement = PlacementMode.AbsolutePoint;
ContextMenu.HorizontalOffset = cursorPosition.X;
ContextMenu.VerticalOffset = cursorPosition.Y;
ContextMenu.IsOpen = true;
//activate the message window to track deactivation - otherwise, the context menu
//does not close if the user clicks somewhere else
WinApi.SetForegroundWindow(messageSink.MessageWindowHandle);
//bubble event
RaiseTrayContextMenuOpenEvent();
}
}
/// <summary>
/// Displays the <see cref="TrayPopup"/> control if
/// it was set.
/// </summary>
private void ShowTrayPopup(System.Windows.Point cursorPosition)
{
if (IsDisposed)
{
return;
}
//raise preview event no matter whether popup is currently set
//or not (enables client to set it on demand)
var args = RaisePreviewTrayPopupOpenEvent();
if (args.Handled)
{
return;
}
if (TrayPopup != null)
{
//use absolute position, but place the popup centered above the icon
TrayPopupResolved.Placement = PlacementMode.AbsolutePoint;
TrayPopupResolved.HorizontalOffset = cursorPosition.X;
TrayPopupResolved.VerticalOffset = cursorPosition.Y;
//open popup
TrayPopupResolved.IsOpen = true;
IntPtr handle = IntPtr.Zero;
if (TrayPopupResolved.Child != null)
{
//try to get a handle on the popup itself (via its child)
HwndSource source = (HwndSource)PresentationSource.FromVisual(TrayPopupResolved.Child);
if (source != null)
{
handle = source.Handle;
}
}
//if we don't have a handle for the popup, fall back to the message sink
if (handle == IntPtr.Zero)
{
handle = messageSink.MessageWindowHandle;
}
//activate either popup or message sink to track deactivation.
//otherwise, the popup does not close if the user clicks somewhere else
WinApi.SetForegroundWindow(handle);
//raise attached event - item should never be null unless developers
//changed the CustomPopup directly...
if (TrayPopup != null)
{
RaisePopupOpenedEvent(TrayPopup);
}
//bubble routed event
RaiseTrayPopupOpenEvent();
}
}
